Will this mirror plug into my existing wiring?

This is a powered mirror assembly — verify your vehicle's electrical connector type and mirror control switch compatibility before installation. If your Sienna originally came with power mirrors, the wiring should be in place.

Do I need any special tools or hardware to install this?

Mounting hardware and installation fasteners are not included — you'll need to source these based on your specific mounting method. Most OE mirrors use standard automotive fasteners; refer to your vehicle's service manual for torque specs.

Can I swap this mirror onto my driver's side if it comes pre-installed on the passenger side?

This assembly is a left-side mirror only — it's not interchangeable with the right side. Order the correct side for your installation point.